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Author Liebermann, D.G openurl 
  Title Biomechanical aspects of motor control in human landing Type Book Chapter
  Year 2008 Publication Routledge Handbook of Biomechanics and Human Movement Science Abbreviated Journal  
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  Publisher Routledge Ltd Place of Publication Editor R. Bartlett; Y. Hong  
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  Notes Approved no  
  Call Number Serial 47  
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Author Liebermann, D.G.; Franks I.M. openurl 
  Title Video-feedback and information technologies Type Book Chapter
  Year 2008 Publication Essentials of notational analysis Abbreviated Journal  
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  Publisher E & FN Spon Pub Place of Publication Editor I.M. Franks; M. Hughes  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 48  
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Author Uri, O.; Pritsch, M.; Oran, A.; Liebermann, D.G. url  doi
openurl 
  Title Upper limb kinematics after arthroscopic and open shoulder stabilization Type Journal Article
  Year 2014 Publication Journal of Shoulder and Elbow Surgery Abbreviated Journal Journal of Shoulder and Elbow Surgery  
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  ISSN 1058-2746 ISBN Medium  
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  Notes Approved no  
  Call Number Serial 75  
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Author Levin, M.F.; Liebermann, D.G.; Parmet, Y.; Berman, S. url  doi
openurl 
  Title Compensatory Versus Noncompensatory Shoulder Movements Used for Reaching in Stroke Type Journal Article
  Year 2015 Publication Neurorehabilitation and Neural Repair Abbreviated Journal Neurorehabil Neural Repair  
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  Keywords adaptation; arm movement; compensation; kinematics; recovery; rehabilitation  
  Abstract BACKGROUND: The extent to which the upper-limb flexor synergy constrains or compensates for arm motor impairment during reaching is controversial. This synergy can be quantified with a minimal marker set describing movements of the arm-plane. OBJECTIVES: To determine whether and how (a) upper-limb flexor synergy in patients with chronic stroke contributes to reaching movements to different arm workspace locations and (b) reaching deficits can be characterized by arm-plane motion. METHODS: Sixteen post-stroke and 8 healthy control subjects made unrestrained reaching movements to targets located in ipsilateral, central, and contralateral arm workspaces. Arm-plane, arm, and trunk motion, and their temporal and spatial linkages were analyzed. RESULTS: Individuals with moderate/severe stroke used greater arm-plane movement and compensatory trunk movement compared to those with mild stroke and control subjects. Arm-plane and trunk movements were more temporally coupled in stroke compared with controls. Reaching accuracy was related to different segment and joint combinations for each target and group: arm-plane movement in controls and mild stroke subjects, and trunk and elbow movements in moderate/severe stroke subjects. Arm-plane movement increased with time since stroke and when combined with trunk rotation, discriminated between different subject groups for reaching the central and contralateral targets. Trunk movement and arm-plane angle during target reaches predicted the subject group. CONCLUSIONS: The upper-limb flexor synergy was used adaptively for reaching accuracy by patients with mild, but not moderate/severe stroke. The flexor synergy, as parameterized by the amount of arm-plane motion, can be used by clinicians to identify levels of motor recovery in patients with stroke.  
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  Language English Summary Language Original Title  
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  ISSN 1545-9683 ISBN Medium  
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  Notes PMID:26510934 Approved no  
  Call Number Serial 79  
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Author Frenkel-Toledo, S.; Liebermann, D.G.; Bentin, S.; Soroker, N. url  doi
openurl 
  Title Dysfunction of the Human Mirror Neuron System in Ideomotor Apraxia: Evidence from Mu Suppression Type Journal Article
  Year 2016 Publication Journal of Cognitive Neuroscience Abbreviated Journal J Cogn Neurosci  
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  Abstract Stroke patients with ideomotor apraxia (IMA) have difficulties controlling voluntary motor actions, as clearly seen when asked to imitate simple gestures performed by the examiner. Despite extensive research, the neurophysiological mechanisms underlying failure to imitate gestures in IMA remain controversial. The aim of the current study was to explore the relationship between imitation failure in IMA and mirror neuron system (MNS) functioning. Mirror neurons were found to play a crucial role in movement imitation and in imitation-based motor learning. Their recruitment during movement observation and execution is signaled in EEG recording by suppression of the lower (8-10 Hz) mu range. We examined the modulation of EEG in this range in stroke patients with left (n = 21) and right (n = 15) hemisphere damage during observation of video clips showing different manual movements. IMA severity was assessed by the DeRenzi's standardized diagnostic test. Results showed that failure to imitate observed manual movements correlated with diminished mu suppression in patients with damage to the right inferior parietal lobule and in patients with damage to the right inferior frontal gyrus pars opercularis-areas where major components of the human MNS are assumed to reside. Voxel-based lesion symptom mapping revealed a significant impact on imitation capacity for the left inferior and superior parietal lobules and the left post central gyrus. Both left and right hemisphere damages were associated with imitation failure typical of IMA, yet a clear demonstration of relationship to the MNS was obtained only in the right hemisphere damage group. Suppression of the 8-10 Hz range was stronger in central compared with occipital sites, pointing to a dominant implication of mu rather than alpha rhythms. However, the suppression correlated with De Renzi's apraxia test scores not only in central but also in occipital sites, suggesting a multifactorial mechanism for IMA, with a possible impact for deranged visual attention (alpha suppression) beyond the effect of MNS damage (mu suppression).  
  Address Loewenstein Hospital, Ra'anana, Israel  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 0898-929X ISBN Medium  
  Area Expedition Conference  
  Notes PMID:26942323 Approved no  
  Call Number Serial 82  
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